Harvest tips: Ready to harvest in about 55 to 60 days, when the central head is 4 to 6 inches in diameter. Don't wait too long, or the florets will flower.

Broccoli keeps in the fridge for a couple of weeks in airtight plastic bags. To freeze, cut the head into bite-sized chunks; leave a little stem on each piece. Cut stems into 1-inch lengths. Blanch for three minutes in boiling water, then dunk in ice-cold water for three minutes. Drain; store in airtight freezer bags for up to six months.